Antimicrobial susceptibility of cinnamon and red and common thyme essential oils and their main constituent compounds against Streptococcus suis

2021 ◽  
Author(s):  
F.C. de Aguiar ◽  
A.L. Solarte ◽  
L. Gómez‐Gascón ◽  
A. Galan‐Relaño ◽  
I. Luque ◽  
...  
Keyword(s):  
Essential Oils ◽  
Antimicrobial Susceptibility ◽  
Streptococcus Suis ◽  
Main Constituent

scholarly journals AlpiniaEssential Oils and Their Major Components againstRhodnius nasutus, a Vector of Chagas Disease

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Thamiris de A. de Souza ◽  
Marcio B. P. Lopes ◽  
Aline de S. Ramos ◽  
José Luiz P. Ferreira ◽  
Jefferson Rocha de A. Silva ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Chagas Disease ◽  
Biological Activities ◽  
Main Constituent ◽  
Antifeedant Activity ◽  
Potential Use

Species of the genusAlpiniaare widely used by the population and have many described biological activities, including activity against insects. In this paper, we describe the bioactivity of the essential oil of two species ofAlpiniagenus,A. zerumbetandA. vittata, againstRhodnius nasutus, a vector of Chagas disease. The essential oils of these two species were obtained by hydrodistillation and analyzed by GC-MS. The main constituent ofA. zerumbetessential oil (OLALPZER) was terpinen-4-ol, which represented 19.7% of the total components identified. In the essential oil ofA. vittata(OLALPVIT) the monoterpeneβ-pinene (35.3%) was the main constituent. The essential oils and their main constituents were topically applied onR. nasutusfifth-instar nymphs. In the first 10 min of application, OLALPVIT and OLALPZER at 125 μg/mL provoked 73.3% and 83.3% of mortality, respectively. Terpinen-4-ol at 25 μg/mL andβ-pinene at 44 μg/mL provoked 100% of mortality. The monitoring of resistant insects showed that both essential oils exhibited antifeedant activity. These results suggest the potential use ofA. zerumbetandA. vittataessential oils and their major constituents to controlR. nasutuspopulation.

scholarly journals Antimicrobial susceptibility of Streptococcus suis isolated from diseased pigs, asymptomatic pigs, and human patients in Thailand

2019 ◽  
Vol 15 (1) ◽  
Author(s):  
Suganya Yongkiettrakul ◽  
Krissana Maneerat ◽  
Buppa Arechanajan ◽  
Yuwares Malila ◽  
Potjanee Srimanote ◽  
...  
Keyword(s):  
Antimicrobial Susceptibility ◽  
Streptococcus Suis

scholarly journals Comparative Chemical Composition and Antioxidant Properties of the Essential Oils of three Sideritis libanotica Subspecies

2015 ◽  
Vol 10 (6) ◽  
pp. 1934578X1501000 ◽  
Author(s):  
Carmen Formisano ◽  
Filomena Oliviero ◽  
Daniela Rigano ◽  
Nelly Apostolides Arnold ◽  
Felice Senatore
Keyword(s):  
Essential Oils ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Moderate Activity ◽  
Ferric Ion ◽  
Main Constituent ◽  
Dpph Radical ◽  
Hexadecanoic Acid ◽  
Phytochemical Composition ◽  
Dpph Radical Scavenging

The phytochemical composition of the essential oils of three Sideritis libanotica subspecies, namely S. libanotica ssp. libanotica, S. libanotica ssp. linearis and S. libanotica ssp. michroclamys, all collected in Lebanon, was analyzed by GC and GC-M S. The diterpene sideridiol was recognized as the main constituent of both S. libanotica ssp. libanotica (50.8%) and S. libanotica ssp. michroclamys (18.4%) oils, while hexadecanoic acid (10.5%) prevailed in S. libanotica ssp. linearis. The antioxidant activity of the oils was studied in two cell free systems by DPPḢ radical scavenging and ferric ion reduction (FRAP) assays; only S. libanotica ssp. linearis showed a moderate activity when assayed by the FRAP test (0.6± 0.01 mmol TE/mL).

scholarly journals Antioxidant and Antiproliferative Activities of the Essential Oils fromThymbra capitataandThymusSpecies Grown in Portugal

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Maria Graça Miguel ◽  
Custódia Gago ◽  
Maria Dulce Antunes ◽  
Cristina Megías ◽  
Isabel Cortés-Giraldo ◽  
...  
Keyword(s):  
Free Radicals ◽  
Phenolic Compounds ◽  
Essential Oils ◽  
Cytotoxic Agents ◽  
Leukemia Cells ◽  
Main Constituent ◽  
Antiproliferative Activities

The antioxidant and antiproliferative activities of the essential oils fromThymbra capitataandThymusspecies grown in Portugal were evaluated.ThymbraandThymusessential oils were grouped into two clusters: Cluster I in which carvacrol, thymol,p-cymene,α-terpineol, andγ-terpinene dominated and Cluster II in which thymol and carvacrol were absent and the main constituent was linalool. The ability for scavenging ABTS•+and peroxyl free radicals as well as for preventing the growth of THP-1 leukemia cells was better in essential oils with the highest contents of thymol and carvacrol. These results show the importance of these two terpene-phenolic compounds as antioxidants and cytotoxic agents against THP-1 cells.

scholarly journals Chemical Composition of the Essential Oils Of Salvia Spp. Leaves

2021 ◽  
Vol 50 (4) ◽  
pp. 1173-1180
Author(s):  
Musa Turkmen
Keyword(s):  
Chemical Composition ◽  
Essential Oils ◽  
Oil Content ◽  
The Other ◽  
Main Constituent ◽  
Endemic Plant ◽  
Flora Of Turkey ◽  
Salvia Fruticosa ◽  
Fourth Species ◽  
Salvia Officinalis L

The chemical composition of the hydrodistilled essential oils of four Salvia spp. were analysed by GCMS. Three of them (Salvia aramiensis Rech. fil., Salvia fruticosa Mill., Salvia tomentosa Mill.) analyzed in this study grow naturally in the Hatay flora. On the other hand, S. aramiensis is an endemic plant in Hatay flora. Fourth species (Salvia officinalis L.) is not growing in the flora of Turkey, but is only cultivated. The highest essential oil content (5.31%) was found in S. aramiensis and the least 1.68% was detected in S. officinalis. Eucalyptol was the main constituent for S. aramiensis, S. fruticosa and S. tomentosa. While this component was 58.65% in S. aramiensis, it was determined as 44.70 and 34.97% in S. tomentosa and S. fruticosa, respectively. In S. officinalis, the main constituent was determined as δ-Thujone (33.83%) and camphor (21.46%). Eucalyptol has been identified as the main composition in sage species which is grown in flora. Bangladesh J. Bot. 50(4): 1173-1180, 2021 (December)

scholarly journals Chemical Composition and Anti-mildew Activities of Essential Oils from Different Parts of Michelia compressa var. formosana

2015 ◽  
Vol 10 (4) ◽  
pp. 1934578X1501000
Author(s):  
Yu-Chang Su ◽  
Kuang-Ping Hsu ◽  
Eugene I-Chen Wang ◽  
Chen-Lung Ho
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Main Constituent ◽  
Germacrene D ◽  
Leaf Oil ◽  
Essential Oil Yield ◽  
Different Parts ◽  
Type Apparatus

In this study, anti-mildew activities of the essential oils of the leaves, wood, twigs, flowers, and their constituents from Michelia compressa var. formosana were evaluated in vitro against 7 mildew fungi. The main compounds responsible for the anti-mildew activities were isolated and identified. The essential oils from the fresh leaves, wood, twigs, and flowers of M. compressa var. formosana were isolated using hydrodistillation in a Clevenger-type apparatus, and characterized by GC-FID and GC-MS. The essential oil yield from the flowers was the highest, and the oils obtained from the 4 parts of the tree were composed mainly of sesquiterpenoids. The leaf oil consisted primarily of α-cadinol (18.9%) and germacrene D (18.5%); the twig oil's main constituent was α-cadinol (19.1%); the wood oil's major components were α-cadinol (25.7%) and β-eudesmol (20.2%); and the flower oil contained α-cadinol (11.4%). Comparing the anti-mildew activities of the oils suggested that wood oil was the most effective. Further fractionation of the wood oil produced α-cadinol, β-eudesmol, τ-cadinol, and elemol. The 4 compounds exhibit very strong anti-mildew activities, and these in descending order are α-cadinol, elemol, β-eudesmol, and τ-cadinol. For the anti-mildew activities of the wood oil, the active source compounds were determined to be α-cadinol, elemol, β-eudesmol, and τ-cadinol.

scholarly journals Chemical Composition and Bioactivity of the Essential Oils of Heracleum pyrenaicum subsp. pollinianum and Heracleum orphanidis

2016 ◽  
Vol 11 (4) ◽  
pp. 1934578X1601100 ◽  
Author(s):  
Ljuboš Ušjak ◽  
Silvana Petrović ◽  
Milica Drobac ◽  
Marina Soković ◽  
Tatjana Stanojković ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oils ◽  
Cytotoxic Effect ◽  
Main Constituent ◽  
Microdilution Method ◽  
Octyl Acetate ◽  
Antifungal Potential ◽  
Leaf Oil ◽  
Aliphatic Esters ◽  
Fruit Oil

The objective of this research was to analyze the chemical composition, antimicrobial and cytotoxic activity of Heracleum pyrenaicum subsp. pollinianum (Bertol.) F. Pedrotti & Pignatti (HPP) and H. orphanidis Boiss. (HO) essential oils. The composition of the oils was analyzed by GC and GC-MS. β-Pinene (35.1%) was the most abundant compound in HPP root oil, while ( Z)-falcarinol (80.0%) dominated in HO root oil. ( E)-Nerolidol (28.5%) was the main constituent in HPP leaf oil. HPP fruit oil, as well as HO leaf and fruit oils mainly contained aliphatic esters, mostly octyl acetate (50.5–84.5%). Antimicrobial screening was performed by microdilution method against eight bacterial and eight fungal strains. The strongest antibacterial activity was shown by both root oils (MICs 0.02–0.60 mg/mL and MBCs 0.04–2.50 mg/mL for HPP, and MICs 0.02–1.25 mg/mL and MBCs 0.04–2.50 mg/mL for HO), while the best antifungal potential was exhibited by HPP fruit oil (MICs 0.30–0.60 mg/mL and MFCs 0.60–1.25 mg/mL) and HO leaf oil (MICs 0.15–0.63 mg/mL and MFCs 0.30–1.25 mg/mL). The tested root and fruit oils exhibited strong cytotoxic effect, which was determined by MTT test against HeLa (IC50 7.53–21.07 μg/mL) and LS174 (IC50 24.16–58.86 μg/mL) cell lines.

Biochemical Traits and Antimicrobial Susceptibility of Streptococcus suis Isolated from Slaughtered Pigs

1994 ◽  
Vol 41 (1-10) ◽  
pp. 608-617 ◽  
Author(s):  
C. Prieto ◽  
F. J. García ◽  
P. Suárez ◽  
M. Imáz ◽  
J. M. Castro
Keyword(s):  
Antimicrobial Susceptibility ◽  
Streptococcus Suis ◽  
Biochemical Traits ◽  
Slaughtered Pigs
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